After reading back 10 pages in that thread it looks like my guess of $5-6k was spot on, about $5500 ($6500 and they give you $1k for your old battery). At that price an '11 no matter how clean isn't worth much more than $2-3k(IMO anyway). Personally, I'd much rather pay $8-10k for a 12 bar '13+ but thats just me lots of improvements after '12.

Yes the '11/'12 year models only had the ECO setting, similar to post '12 S models. ECO still gives you more aggressive regen when lifting your foot off the accelerator but not as strong as a Leaf with the B mode. Note, with a non B mode Leaf you can still get stronger regen, you just need to lightly put your foot on the brake pedal, don't push too hard or friction brakes will kick in.The thing with a degraded battery is it won't have the ability to accept regen very much, you may be lucky to get more than a couple bubbles compared to a better battery, very unfortunate as you probably would really like the regen on a degraded battery with limited range. Expect to replace your brake pads more often on a Leaf with a degraded battery.